Dufay is a lunar impact crater that is located on the far side of the Moon.

It lies about one crater diameter to the east of the large walled plain Mandel'shtam.

The rim of this crater is heavily worn by impacts, and several small craterlets lie along the southern edge.

To the northeast of Dufay is a bright albedo anomaly that does not correlate with any topographic features.

[2] By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Dufay.